oj.uz

Submission #733877

# Submission time Handle Problem Language Result Execution time Memory
733877 2023-05-01T11:29:36 Z vjudge1 Cryptography (NOI20_crypto) C++17
26 / 100
 1000 ms 4952 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long 
const ll d = 1e9 + 7;
ll ft(ll n) {
    ll ans = 1;
    for(ll i = 2; i <= n; i++) {
        ans *= i;
        ans %= d;
    }
    return ans;
}
int main() {
    ll n;
    cin >> n;
    vector <ll> v(n), v1;
    for(ll i = 0; i < n; i++) {
        cin >> v[i];
    }
    v1 = v;
    ll ans = 1;
    sort(v1.begin(), v1.end());
    if(v == v1) {
        cout << 1;
        return 0;
    }
    reverse(v1.begin(), v1.end());
    if(v1 == v) {
        cout << n;
        return 0;
    }
    else reverse(v1.begin(), v1.end());
    for(ll i = 0; i < v.size(); i++) {
        for(ll j = 0; j < v1.size(); j++) {
            if(v[i] == v1[j]) {
                n--;
                ans += ft(n) * j;
                ans %= d;
                auto it = v1.begin() + j;
                auto it1 = v.begin() + i;
                v1.erase(it);
                v.erase(it1);
                i--;
                j--;
                break;
            }
        }
    }
    cout << ans;
}

Compilation message

Crypto.cpp: In function 'int main()':
Crypto.cpp:33:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |     for(ll i = 0; i < v.size(); i++) {
      |                   ~~^~~~~~~~~~
Crypto.cpp:34:25: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |         for(ll j = 0; j < v1.size(); j++) {
      |                       ~~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct

Subtask #2
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Incorrect 1 ms 212 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 110 ms 4952 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Execution timed out 1073 ms 4952 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 25 ms 340 KB Output is correct
3 Correct 25 ms 212 KB Output is correct
4 Correct 26 ms 348 KB Output is correct
5 Correct 25 ms 348 KB Output is correct
6 Correct 24 ms 344 KB Output is correct
7 Correct 24 ms 344 KB Output is correct
8 Correct 25 ms 340 KB Output is correct
9 Correct 24 ms 212 KB Output is correct
10 Correct 28 ms 344 KB Output is correct
11 Correct 25 ms 340 KB Output is correct
12 Correct 24 ms 340 KB Output is correct
13 Correct 25 ms 212 KB Output is correct
14 Correct 24 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 25 ms 340 KB Output is correct
17 Correct 24 ms 340 KB Output is correct
18 Correct 24 ms 348 KB Output is correct
19 Correct 25 ms 344 KB Output is correct
20 Correct 25 ms 340 KB Output is correct
21 Correct 24 ms 340 KB Output is correct
22 Correct 24 ms 340 KB Output is correct

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Incorrect 1 ms 212 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #7
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Execution timed out 1073 ms 4952 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #8
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Incorrect 1 ms 212 KB Output isn't correct
7 Halted 0 ms 0 KB -